Hitchin, Letchworth Garden City, Sandon, Arlesey, Stotfold, Radwell, Bygrave, Therfield, Kelshall, Newnham, Caldecote, Astwick, Aswell, Hinxworth, Langford, Edworth, Guilden Morden, Steeple Morden, Royston, Bassingbourne, Litlington, Dunton, Eyeworth and Biggleswade.